Multidirectional data transmission device
US5923187A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention offers a data transmission device comprising two lines A and B through which digital data flow whose logic levels are defined for each line A or B by potentials taken off positive supply terminals Va or Vb and negative supply terminals Gnda and Gndb of said line A or B, and an interface module 100 which forms the link between the lines A and B. The interface module 100 comprises two management devices, Ga and Gb, dedicated each to one transmission line A or B. The interface module 100 also comprises two devices called potential monitoring devices, Ca and Cb, each monitoring one transmission line A or B. Each monitoring device Ca or Cb has an input called control input INCA or INCB and comprises means for reproducing on the line it controls, A or B, a data defined by a signal received on said control input INCA or INCB. Each management device Ga or Gb comprises means for permitting it to be disabled by the other management device Gb or Ga. Each management device Ga and Gb further comprises means for detecting on the line it is dedicated to, A or B, the presence of a data to be transmitted to the other line, B or A, respectively. Each management device, Ga or Gb further…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.